Pressure-filter.



PATBNTBD JAN. 29, 1907.

G. W. MERRILL. PRBSSUREVPILTER. APPLICATION FILED MAR. 28,1905.

4 SHEBTS-SHEET 2,

INVENTOR //ITNEJSES; l wg l PATENTES) JAN. 29, 1907.

C. W. MERRILL, PRESSURE EILTEE. APPLICATION FILED MAR.28, 1905.

4 SHEETS-SHEET 3.

i l l Il h WITNESSES:

IN VE NTOR md 774 m7/ By/zz's zzowwa/ 7m f P ATENTED JAN. 29, 190'?.

c. W. MERRILL. PRESSURE EILTE'R. APPLICATION FILED MAIB.28,1905.

4 SHEETSSHEET 4.

\ l N VENTOR WMZ@ Hy /zz's fofney.

WITNESSES; d @Ca/ga www@ ing is a specification.

UNirnn s aras rafrnnr rrron.

CHARLES W. MERRILL, OF LEAD, SOUTH DAKOTA.

PRESSURE-FILTER.

To @ZZ whom t may concern:

Be it known that I, CHARLES W. MERRILL, a citizen of the United States, and a resident of Lead, county of Lawrence, South Dakota, have invented a new and useful 'Improvement in Pressure-Filters, of which the iollow- -My invention relates to im rovements in a aratus Jfor separating uniti terable materia iroma mixture of filterable and unlterable matter, and it particularly relates to im-V provements'in pressure-iilters in which the separation and treatment of such material is etlected.

The primary facilitate and cheapen the remo val from thev y containers or iilterresses of the material which will not pass t irough the iiltering medium. t A further object is to errnit of the indeendent introduction oi' c eansing,precipitat 1ng,'or other material to the containers.

' A further obj ect is to'eect a rapid removal of the uniilterable material which accumu lates in the containers of the press without separating the units of the press'.

In the operation of iiltenpresse's or similar filters it is customary to s eparate the units of which each press is composed and remove the solid, semisolid,or unrilterablematerial from the distanoeeframe or container separately,

usually by hand. This methodis naturally A expensive, as the wear and tear on theiilthe press cannot be used for iiltering teringunedium covering the iilter-platesis heavy and the time so occupied during'which greatly reduces its capacity'per unit of time. Hence the scope of the ordinary filter-press is limited to the separation of. solids from liquids to cases wi ere the value of such materials is such'as to permit of the expensesl outlined above. Furthermore, the necessity of removing the iiltered material from each distance-frame separately results in the use oi deep distance-frames order to increase their separate capacity. Moreover, the -re sultant thick cake oi' solid or semisolidmaterial increases the pressure necessary to acconiplish the filtering, and thus adds another factor to thev cost of operating said iilterpresses.

a container is used in a lter-press of' the ordinary' hara-eter, which container is provided with a direct inlet for the cleansing medium and a direct outlet for the mixture, that when the two are' so placed with reference to object of my invention 1s to Now I have discovered that where' Specification of Letters Patent.

Application filed March 28, 1905. Serial No. 252,524.

Patented Jan. 29, 1907.

each other that they are no longer opposite to each other then the contents may beei'iiciently discharged without separating the units of i the iilter-press. l

The present application is a continuation in part of application Serial No. 188,474, filed by the present applicant on January 1 1, 1904;,

'which was allowed, but subsequently forfeited. v

The invention will .be best understood by reference to the accompanying four sheets of` drawings, in which- Figure 1 is an elevation or' a iilter-press sectioned in three difierent planes indicated by the letters A, B, and O, A being sectioned on the line E E of Fig. 4, B on the line F F of Fig. 3, and O on the line G G of Fig. 2 is anrend view of the apparatus. Fig. 3 is a vertical end view of one form or' container. Fig. 4 and Fig. 5 lare end views. of one of the filter-plates, showing the grooves through which the discharge of the iiitrate is edected, somewhat differently arranged in each figure. 6 is a vertical cross-section on the line of 7 of one end ofone of the iilterplates, showing the grooves through which the .discharge is effected, Fig. 7 is an enlarged front view of one end of the 'lilter-` plate shown in Fig. 5. Fig. 8 is a vertical cross-section on the line J J of Fig. 9 of one of the improved forms of container. Fig. 9 is a vertical cross-section on the line I 1 of Fig. 8 of a series of the same containers put together. Fig. 1Q is arvertical section of a still diiierent form of improved container on the line L L of Fig. 11. Fig. 1 1 is a vertical longitudinal section on the lines K K oi Fig. 10 ofza series of such modified form of container put together. Fig. 12 is a similar vertical section showing two inlet-pipes, two nozzles, and two outlet-channels from each container. V`Fig. 13 is a similar vertical section on the line Q Q of Fig. 14, showing two inlet-nozzles and a single outlet from each container. Fig. 1/-1 is a vertical section of the form oi container shownin Fig. 13 on the line P P of said figure. Fig. '15 is a vertical section of a container having asingle pipe provided with one nozzle and with two outlets from each container.

Similar 'letters refer fto similar parts throughout all the views.

In.Fig. i of the drawings, sA represents the standards at either end oithe filter-press; h, the irame oi the 'pressj.` jis a screw which `forces the end .t forward in the frame -by 5. Fig.

i in any convenient manner and into the chamber.

l 10 and '11) the opening o, which corresponds the filtrate from each filter-plate is discharged yare openings in the sides.

when a series Vof containers are put together means of the handles i. cc are the exterior frames of the series of containers, and 'g g are the filter-plates. All of these devices and parts are common to the .ordinary form of filter-presses.

In Figs. 1 and 2 a filter-press is shown o ,f What is called the closed-delivery type as distinguished from the open-delivery type. In the formertype the filtrate is discharged into a suitable channel Within the filterpress, whereas in the open-delivery system through a special opening into a trough or other receptacle for collecting the same on lthe exterior of the press.

In the construction tif-containers shown in Figs. 1, 8, 9,'10,11',12,13, 14, and 15, is the frame of the container, Which may be in cross-section of any convenient shape. 6 6` o is an opening or outlet at one side through Which the solid, semisolid, or unfilterable material, herein after for convenience called the precipitate,J is removed from the containers and Which in a filter-press makes a continuous opening through the press, Which is closed at the ends discharges into any suitable receptacle. a is a corresponding inlet for treating the precipitate in. place With liquids, vapors,'or gases and which is preferably placed at either or both upper `corners of the container and in like manner forms a continuousopening or openings when the containers are placed together in the filter-press.` d is an inlet through which thematerial to be filtered is introduced, Which-inlet is of the same general character and becomes continuous when the containers are put together in the filterpress and is provided With the openings 9 9 9, from Which the material is introduced w is a supply pipe or,- channel through Which the liquid vapor-or gasv yis introduced under 'pressure for the purpose of removingthe precipitate. This is provided with a" nozzle, slit, or hole y, which enters into each container. g is thefilter-plate Which is introduced between the containers. 7v is a gate Whichvis used to close the openings 6 6.

In the second construction (shown in Figs.

to o in the structure shown in Figs. 2 and 3, is placed Within the container and contains in its interior the supply-pipe w, fixed or rotative, which corresponds to the pipe w in Fig. 2, and like it it is provided with nozzles 'y ly., similar to the nozzles y y in Fig. 3, which pass into each container, a series of `these being employed as in the previousconstruction. d represents theV inlet through Which thel material to be filtered is introduced, which l corresponds to the inlet d in Figs. 2 and R. The. lter-plate, whichforms no--part ofthis j filtered is introduced, which inlet is of the same general character as that in the containers and becomes continuous when the various parts are put together in the filterpress. The ltrate from the plates passes into the grooves 8 and thence may be discharged eitherfrom each plate separately by what has heretofore been referred to as theY open-delivery system, or it may be discharged into the opening a, as sh own in Figs. 1, 4, 5, and 6. Vhen four openings a are provided in the filter-plate, as shown in Figs. 4 and 5, the container has of necessity to be of the form shown in Fig.' 3 and4 provided with similar openings a;

The contlnuous passage d termlnates, as

connect upwardly therefrom, as' shown at one end of the pipe d. In the construction shown control is effected by the valves c and c2, respectively. through a stuffing-box m, and its movement is controlled by a handle u or in any other convenient manner. The containers and .shown in Fig. 1, in vertical pipes f', which Y The pipe w emerges IOO filter-plates .are supported on the arm by the l lugs e, as shown irr Figs. 1 and 2. Forthe purpose of eecting the discharge of the contents of the containers after the cleansing material is introduced the arrangement of ICS the pipes shown in Fig. 1, which effects thev discharge by means ofsuction, may be eme ployed. In this figure, Z is the main discharge-pipe, which traverses the filter-press horizontally at the bottom. j" represents one or more vertical pipesF connecting downwardly therefrom, Which vnaybe placed, as shown, at one end of thepipe Z.A The fiow through this pipe or pipesis controlled by the valve or valves c. The effect of opening the valvec is to cause the pulp in the pipe Z to suction downward, and thus prevent the accumulation thereof withinVV the channel o and leave the pipe w free to be rotated by the handle u.

The method of operating the pressure-filter when anyone ofthe aforesaid types of containers is used is as follows: For the purpose of charging the material'to be filteredconsist ing of a liquid, gas, or vapor 'and a semisolid, solid, or unfilterable material, for conveniro ience called the precipitate, into the containers the valve c in the outlet-pipe is closed, the valve c2 is also closed,"and the valve c is opened, and the material enters o time, yas may be found convenient.

but not often, the case, to charge the filter at the bottom, the valve c is closed, and the 5 valve cz'is opened, and the material to he chargedy in this case passes in through the pipe l.v The -material is brought intothe containers a; through the channels d. The plates g gg are covered with ltering mate rial, which completes the closure of the containers so far as the uniilterable material is concerned, While the liquid, gas, or vapor passesI through the filtering mediumv and out through the grooves 8 in the plates g either into the continuous channel c in the case of a Aclosed discharge, as shown in the Fig. 1, or byl vduced either by means of the inlets Z or c,- the latter having slits n, leading into alternate iilter-plates and behind the'iiltering medium, as shown in Figs. 9, 11, an'd 14. Vllhen the desired treatment of the precipitate in the containers has been completed and it is closes the pipe l, in which the openings o, Figs. 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 13, 14, and 15, is or are opened, and liquid, vapor, or gas under pressure is introduced through the pipe w and from the pipe w through the noz zles y, and the precipitate is removed through the channel by suction or the outlet 11 by gravity alone. The outlets are then closed,

' andthe pressure-'filter is again ready for charging and treating the `mixture of liquid, gas, or yapor and solid, semisolid, or unfilterable material.

I do not limit myself to. any desired form of delivery, but employ open or closed delivery, as may be desired or found most convenient.

In practice the rotative pipe is provided with suitable nozzles, slits, or openings of any convenient length, shape, or size through which the liquid, vapor, or gas is introduced into each of the containers under pressure at any desired angle for the fpurpose of Washing out or removing the un l The sizes of the nozzles and their positions may vary from time to time as may be deemed best. In Figs. 8 to 11, inclusive, a

i single nozzle y is shown in pipe w entering into each chamber. They are all placed at the same angular plane; but the. plane ot various nozzles or discharge-openings may vary one as regards each other from time to Thus, for example, `two or more nozzles or openings may be employedtt'ith respect to each con- .tainer arranged to discharge the washout mediumfatldiierent angles with respect to ;.'eaclrr-other,l lor in case lof wide containers two 'ready to be removed, the valve c, which.

tered component'.

or more nozzles in line with each other and in parallel planes may be employed, the precise arrangement and construction of the nozzles, slits, or openings and their size and position varying from time to time, as may be 'found desirable. The ,pipe 'w may be rotated through any arc from zero to three hundred and sixty degrees and may beA reversed backthrough the same arc, vor it may beY arranged to be rotated continuously through the complete circle in one direction, as may be found most convenient. Any number of nozzles may be used in connection With any one container, and they may be placed at the samev or diiierent angles and may be used singly or in pairs or in any desired numbers or location.

Iam aware that pressure-filters have been long in use for separating liquid gas or vapor from solid, semisolid, or unfilterable material; also, that the solid, semisolid, oruniilterable material has been treated while in place in the pressure-iilter by liquid, vapor, or gas under pressure as above outlined and vby other methods, and l do not claim these'feaf tures.

I claim as my invention vided with a direct opening through which a cleansing medium may beintroduced in any desiredV direction into the space within the 7 4 container.

2. In a pressure-filter the combination with suitable filter-plates, oi"- a container provided with a direct opening through Whicha cleansing medium may be introduced in any desired direction, into the space within the container, and with a direct outlet through which the mixture oiclea'nsing medium and uniilterable component is discharged.

3. In a pressure-filter the combination with suitable lter-plates, oi a container provided with a direct opening through which a cleansing medium may be introduced in any desired direction, into the space within the IOO IOS

containerand a direct outlet connecting with .a channel in the wall oi the container through which ,the mixture of cleansing medium and unfilterable component is discharged.

4. A pressure-lter comprising with suitable filter-plates a series of containers each provided with a direct opening through which a cleansing material may be introduced in any 'desired direction, into thespace with-v in the containers.

5. A prcssureeiilter comprising T@lith suitable iilter-plates a series ot' containers each provided with a direct opening through which a cleansing material may be introduced in any desired direction, into the space within the containers, and with a 'direct outlet through which the mixture o cleansing niedium and unfilterable component ls discharged.

--6. A pressure-filter comprising with suitable lter-plates a series of containers each provided with a direct opening through which a cleansing material may be introduced in any desired direction, into the space within the containers, and with a direct outlet connecting with a channel in the wall of the container through which the mixture of cleansing medium and uniilterable component is discharged.

7. The combination in a pressure-filter with suitable filter-plates, of acontainer provided with a direct outlet and a rotative pipe provided with devices whereby a cleansing mediuni may be introduced under pressure into the space within the container and the unilterable component within. the container discharged.

Y 8. The combination in a pressure-filter with suitable plates and containers of a rotative pipe provided with devices whereby a cleansing mediummay be introduced through the lpipe and the contents of the pressure-filter discharged. 9. The combination in a pressure-filter, with suitable lter-plates of a series of containers each provided with a direct outlet and rotative pipe provided with devices whereby a cleansing medium may be introduced un- Vcomponent dischargesder pressure into eachcf the spaces within the container and the uniilterable component within the container discharged.

10. A pressure-lter comprising With1suitable filter-plates a series of containers, each provided with a direct opening and a rota` tive pipe provided withdevices whereby a cleansing material may be introduced in any desired quantities and directions, by means of saidl cpening into the space within the containers. l I A 11. A pressure-ltercomprising with suitable filter-plates a series of containers, each provided with a direct opening andv a rotative pipe provided with devices whereby a cleansing material may be introduced in any desired direction, by means of said opening into the space within the containers and through which the mixture of cleansing me` dium and uniilterable component is dis-r charged. y l

12. A pressure-filter comprisingl with suitable iilter-plates a. series of containers, each provided with a direct opening and a rotative pipe provided with devices whereby a cleansing materialmay be introduced in any vdesired direction, by means of saidopening i-nto the space within the containers and a direct outlet connecting with a channel in the i wall of the container through'which the mixture of cleansing medium and uniil-terable 13. `The combination in a pressure-filter with suitable ltereplates, of a container provided with a direct outlet forming when the' containers and plates-are put together'in se channel; and apipe provided with a series of devices whereby a cleansing medium may be introduced under pressure into the space within each container and the uniilterable component discharged from the interio through the outlet-channel.

15. The combination in' a pressure-iilter with suitable filter-plates, of a series of containers, each provided with an opening so connected as to form when the containers and plates are put together a channel within the ilterress connected with each container, an a pipe placed within said channel provided with devices whereby a cleansing medium may be introduced under 'pressure into the space within each container and the uniilterable component within each container discharged through said channel.

16. The combination ina pressure-filter with suitable filter-plates, of a container provided with a direct `outlet forming when the containers are put together with the plates in series, an outlet-channel and a rotative pipe provided with devices whereby a cleansing medium may be introduced under pressure into the space within the container', and the uniilterable component within the container discharged.

17. The-combination in a pressure-iilter with suitable iilterplates of a series of con tainers each provided with a direct outlet forming when put together with the plates an outlet-channel; and a rotative vpipe provided with devices whereby a cleansing medium may be introduced under pressure into the space within each of the containers and the uniilterable component within the container discharged from the interior through the outlet-channel.

18. The combination in a pressureilter with suitable iilter-plates of a series of contai-ners each provided with a direct outlet and a rotative pipe within said outlet provided with devices'whereby a cleansing me dium may be introduced under pressure into the space within each of the containers, and the unfilterable component within the container discharged.

19.. The combination in a vpressure-lilter with suitable lter-plates, oi' a container provided with a direct outlet from the cont aincr 3 and a rotative pipe witliin said outlet provided With devices lellierel-)y a cleansing me- -dium may be introduced under pressure into IOO IOS

IIO

the space within the container, and the un` i'ilterable component lWithin the container discharged.

20. The combination in a pressure-ilter With suitableiilter-plates of a series of containers each provided with a direct outlet forming when putr together` With the plates an outlet-channel an a rotative pipe placed Within said outlet-channel provided with de` let from the container; and a pipe, provided with a series of devices whereby a cleansing medium may be introduced under pressure into the spaces Within the container and the un'lilterable matter ejected therefrom.

22. 'The combination in a pressure-lter, with suitable filterplates of a series of conftainers each providedv with a direct inlet through which the material to be iil-tered may be introduced into the space Within the containers; a direct outlet from each container; and a pipe, provided With a series ofA interior of the container and the unfilterable material ejected therefrom.

24. The combination in a pressure-filter, with suitable iilter-plates of a series of containers each provided With a series of openings so connected as to form when the containers are put together a-continuous channel within the iilter-press opening into each container, and a pipe placed Within said channel provided )with a series odeviceswhereby a cleansing material may be introduced under `pressure into each of the spaces Within the containers and the unilterable material ejected from the interior.

25. The combination in a pressure-filter With suitable filter-plates, of a container provided vvith a direct inlet through which the material to be filtered maybe introduced into the spaee'witbin the same; a direct outlet, forming when the containers are put tovtainers, each provi gether in series an outlet-channel `and a p ipe provided With a device whereby a cleansing vmedium maybe introduced under pressure into each container,l and the uniilterable mat ter ejected therefrom.

26. :The combination in a pressure-iilter, with suitable iilterlates cfa series of conf tainers each provi ed With a direct inlet thIOughWhichthe materialto be iiltered may be introduced intothe s ace Within the containers; a direct outlet om each container, forming when put 'together an outletchannel; and a pipe rovided With a series of fdevices whereby a c eansing medium may be introduced under pressure into each of the sfaces Within the containers and the unfiltera le matter ejected from the interior into the 'outlet-channel.

27. The combination in a pressure-filter Withsuitable lates, of a `container provided With a plura ity of direct outlets forming when the containers and plates are put together in series, a like number of outlet-channels, and pipes provided With devices Whereby a cleansing medium may be introduced under pressure into the space Within each container, and the uniilterable component discharged.

28. YThe combination in a pressure-filter With suitable iilterlates, of a series of condd with Aa plurality of directoutlets, each forming, when the containers are ut togetherwith the plates in a series, a ilre number of .outlet-channels, and pipes provided With a series of devices Whereby a cleansing medium be intrc'duced under pressure into the s ace Within the container, and the uniilterab e component discharged from the interior through the outlets.

29. The combination in a pressure-lter with suitable filter-plates, of a container provided witli a .direct outlet, forming, when the.

containers and plates are put together in se, ries, an outlet-channel, and a i e placed Within the outlet-channel, providiad With devices Whereby a cleansing medium may be in- IOO IIO

troduced under pressure into the space Withy in each container and the uniilterable component discharged.

30,. The combination in a pressure-Elter With suitable ilterlates, of a series of containers each provi ed With a 'direct outlet, i

forming when the containers are ut together with the pipes in a series, an cuil and a pipe placedV Within said channel, provided With a series 'of devices whereby a cleansing medium may be introduced under pressure into the space Within each container, and the unlterable component discharged from the interior through the outlet-channel.

31. The combination in a pressure-lter with suitablelter-plates, of a container provided with a plurality of direct outlets,`form et-channel, y

ing, when the containers and plates are ut together in series, a like number of out etchannels, and a pipe placed in each outletchannel; provided with devices whereby a cleansing medium may be introduced under pressure into the space Within each container and the unlterable component discharged( 32. The combination in e pressure-iilter with suitable iilterlates, of a series of containers, each provi ed with a plurality of direct outlets, forming, when the containers.

are put together with the plates in series, a like number of outlet-channels, and a pipe placed within each outlet-channel, provided with a series of devices whereby a cleansing medium may be introduced under pressure into the space Within each containerand the vunfilterable component discharged from the presence of two witnesses, this 24th day of 2o January, 1905.

CHARLES IV. MERRILL.

vWitnesses:

GEO. D. FOGLEsoNG, WM. FRAGKELTON. 

